Abstract

The multimedia communication plays an important role in our daily life. This also motivates the evolution of communication techniques, and improves the transmission bandwidth. Certainly, the high-quality video-delivering is also accompanied with this trend. Unfortunately, the video bitstream is quite sensitive to transmission error causing the error propagation that can seriously degrade the visual quality. In this paper, the spatial error concealment (SEC) using separately-directional interpolation (SDI) algorithm is proposed to alleviate error propagation. The SDI consists of four procedures: corrupted block partition, edge detection, bilinear interpolation (BI)/ directional interpolation (DI) adoption, and interpolation. The SDI algorithm divides the corrupted block into finer sub-blocks. Each sub-block exhibits its own texture complexity, and thereby the recovering method is also adaptive to the texture complexity in SDI. The SDI algorithm can adaptively recover the finer sub-block by BI and DI, according to the feature of texture complexity. The experiment result reveals that the the proposed SDI technique can achieve a better performance compared with sophisticated SEC algorithms dedicated for spatial-interpolation.

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Acknowledgments

We would like to thank every reviewer for their precious comments and suggestions. This work is supported in part by National Science Council (NSC), Taiwan, R.O.C., under the grant number NSC 102-2622-E-155-011-CC3. Many thanks for NSC and Chip Implementation Center (CIC) for their support.